binaham



'(No ModeL) 2 Sheets-Sheet 1.

O. D. BINGHAM 8a 0. HIGHAM. Piston or Diaphragm Shell for Brakes.

No. 235,336. Patented Dec. 14,1880.

WITNESSES: INVENTORS,

ATTORNEYS.

N. PETERS, 'FNOTO-LITHOGRAPHER, WASHINGTON. u C.

(No Model.) 2Sheets-Sheet2. G. D. BINGHAM & O. "HIGHAM. Piston or Diaphragm Shell for Brakes.

Patented Dec. 14,1880.

' INVENTORS. ?7 WA:

WITNESSES:

ATTORNEYS N. PETERS, lrrungmpflfifl WASHINGTON D c UNITED STATES PATENT OFFICE.

CHARLES D. BINGHAM AND CHARLES HIGHAICI, OF WATERTOWN, NEW YORK, ASSIGNORS TO EAMES VACUUM BRAKE COMPANY, OF SAME PLACE.

PISTON OR DIAPHRAGM SHELL FOR BRAKES.

SPECIFICATION forming part of Letters Patent No. 235,336, dated December 14, 1880.

To all whom it may concern Beit known that we, CHARLES D. BINGHAM and CHARLES HIGHAM, citizens of the United States, "residing at Watertown, in the county of Jefferson and State of New York, have invented certain new and useful Improvements in Piston or Diaphragm Shells for Fluid-Pressure Brakes; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification, in which- Figure 1 represents a rear elevation of a diaphragm-shell to which our improvements have been applied. Fig. 2 represents a horizontal section and partial plan view of the same. Fig. 3 represents a rear elevation of a diaphragm-shell, showing a modified form of our improvements applied thereto. Fig. 4 illustrates a cylinder having our improvements applied.

The object of our invention is to provide a ready and efficient means of securing the operating chambers or shells of fluid-pressure brakes to the car or truck frames.

For this purpose our invention consists in providing the rear or closed end of a piston or diaphragm shell or the side wall of a single or double piston or diaphragm cylinder with a flange or flanges having a series of slots open at one end or closed, and one end of the slots provided with an enlarged opening, and so arranged that when the coach-pins or bolts-are first inserted in their proper places in the car or truck'frame the flange of the piston or diaphragm shell can be easily put in place within the heads of the bolts or coach-pins, and which are thereupon tightened, thereby firmly securing the shell to the car or truck frame. This construction is rendered necessary, as in'practice it is found desirable to form the flange in close proximity to the wall of the shell, such as would not admit of the coach-pin or bolt being inserted through an inclosed hole between the wall of the shell and the rear face of the flange.

In the accompanying drawings our invention is shown applied to a diaphragm-shell of a Application filed September 22, 1880. (No model.)

vacuum-brake apparatus; but it will be obvious that our invention may be applied with equal advantage to the operating shells, chambers, or cylinders of any system of fluid-pressure brakes.

To enable others skilled in the art to make and use our invention, we will now proceed to describe it in detail in connection with the drawings, the same letters of reference indicating the same parts.

A represents a diaphragm-shell, which is of the usual construction. It consists of the shell A proper and the diaphragm A, secured thereto. This diaphragm is provided with the usual clamping-plates, to which is attached the rod through which the brakes are set in action. The shell A is provided with the pipe B, communicating with the continuous brake pipe or pipes throughout the train, and through which the vacuum is destroyed or restored to operate the brakes.

To the back of the shell A is formed a flange, 0, arranged in the manner shown, of any convenient size and form adapted to the purpose. This flange 0 may be cast with or otherwise formed or secured to the shell A, and so as to lie in the same plane with the front or face of the shell. The distance between the flange O and the wall of the shell A is so small that there is not sufficient space to insert a bolt or coach screw or pin of sufficient length between them where an inclosed hole is provided for their reception. To obviate this difficulty we provide a slotted hole opening through the metal of the flange at one end. In practice we prefer to construct the flange O with four of these holes, D, E, F, and G. (See Figs. 1 and 3.) We, however, prefer to construct the flange and the slotted holes in the manner shown by Fig. 1. In this figure the edges of the slotted openings E, F, and Gare each made concentric with arcs of a circle struck from the center or point 01 of the slot D.

In operation a templet is used to mark on the car or truck frame the position of the holes to receive the coach-screws or bolts at the place where the diaphragm is to be fastened. The holes are then bored, the coach-screws inserted, and then driven in until the distance between the screw or bolt head and the frame it is driven into only slightly exceeds the thickness of the flanges (J. The diaphragm-shell is then placed slightly above its final position, and the slotted hole D of the flange (J is then slid into place under the head of the corresponding coach-screw or bolt. The slotted holes E and F are then above and the slotted hole G to one side of their final position. A rotary movement of the diaphragm-shell will then bring all the holes of the flanges into their final position, when the coach-screws or bolts are tightened, thereby firmly securing the shell to the frame.

In Fig. 3 the holes are all slotted in the same direction and open at the lower side. In operation the general directions are the same as those described in connection with Fig. 1,

except that in placing the diaphragm-shell it is moved into position by a perpendicular instead of a rotary movement.

Instead of having the slots open at one end through the metal of the flange, they may be constructed inclosed by the metal, one end of the slot being made large enough to admit the head of the coach-screw or bolt, the arrangez 5 ment and general direction of the slots being the same as described in connection with the foregoing figures.

Having described our invention, what we claim is- A piston or diaphragm shell, cylinder, or vessel for fluid-pressure brakes, provided with a flange or flanges having a series of slots, substantially as described, whereby the shell or vessel may be secured to the car or truck 5 frame, in the manner set forth.

In testimony whereof we aflix our signatures in presence of two witnesses.

CHARLES D. BINGHAM. CHARLES HIGHAM.

Witnesses:

FRANK GOULDING, E. I). EAMEs. 

